Texas Math Models

Try “number line” or “4.5D”

Expanded notation

the form 4.2B names

34,502 G3–4

each digit multiplied by what its place is worthdigit × place, one pair per digit(3 × 10,000) + (4 × 1,000)+ (5 × 100) + (2 × 1)= 34,502(0 × 10) is 0, so it is left out(3 × 10,000) + (4 × 1,000)+ (5 × 100) + (2 × 1)+ (7 × 0.1) + (6 × 0.01)= 34,502.76expanded notation means this exact formexpanded form adds the values; expanded notation shows where each value came from

How this one works

How

multiply each digit by what its place is worth, then add.

Best when

a question asks for expanded notation by name.

seen one of these on a test? See it on a real question: TEKS 4.2B, what each digit is worth.

The same problem, other ways